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| author | Andrew Morton <akpm@osdl.org> | 2005-09-09 13:01:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:56:43 -0700 |
| commit | 1299232b5743da454c73853b90b3d2d83dce1737 (patch) | |
| tree | 84f5fc0c1a3cf0bd9a47baa7f4ed268494d565e2 /arch | |
| parent | 5dce225bd9ea60e28e17076de63df0dee51b2883 (diff) | |
| download | linux-stable-1299232b5743da454c73853b90b3d2d83dce1737.tar.gz linux-stable-1299232b5743da454c73853b90b3d2d83dce1737.tar.bz2 linux-stable-1299232b5743da454c73853b90b3d2d83dce1737.zip | |
[PATCH] x86: MP_processor_info fix
Remove the weird and apparently unnecessary logic in MP_processor_info() which
assumes that the BSP is the first one to run MP_processor_info(). On one of
my boxes that isn't true and cpu_possible_map gets the wrong value.
Cc: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/mpparse.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index cafaeffe3818..15949fd08109 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -122,8 +122,8 @@ static int MP_valid_apicid(int apicid, int version) static void __init MP_processor_info (struct mpc_config_processor *m) { - int ver, apicid, cpu, found_bsp = 0; - physid_mask_t tmp; + int ver, apicid; + physid_mask_t phys_cpu; if (!(m->mpc_cpuflag & CPU_ENABLED)) return; @@ -181,7 +181,6 @@ static void __init MP_processor_info (struct mpc_config_processor *m) if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { Dprintk(" Bootup CPU\n"); boot_cpu_physical_apicid = m->mpc_apicid; - found_bsp = 1; } if (num_processors >= NR_CPUS) { @@ -195,29 +194,26 @@ static void __init MP_processor_info (struct mpc_config_processor *m) " Processor ignored.\n", maxcpus); return; } - num_processors++; ver = m->mpc_apicver; if (!MP_valid_apicid(apicid, ver)) { printk(KERN_WARNING "Processor #%d INVALID. (Max ID: %d).\n", m->mpc_apicid, MAX_APICS); - --num_processors; return; } - if (found_bsp) - cpu = 0; - else - cpu = num_processors - 1; - cpu_set(cpu, cpu_possible_map); - tmp = apicid_to_cpu_present(apicid); - physids_or(phys_cpu_present_map, phys_cpu_present_map, tmp); - + cpu_set(num_processors, cpu_possible_map); + num_processors++; + phys_cpu = apicid_to_cpu_present(apicid); + physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu); + /* * Validate version */ if (ver == 0x0) { - printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d! fixing up to 0x10. (tell your hw vendor)\n", m->mpc_apicid); + printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d! " + "fixing up to 0x10. (tell your hw vendor)\n", + m->mpc_apicid); ver = 0x10; } apic_version[m->mpc_apicid] = ver; |